diff --git a/pymake/values.py b/pymake/values.py
index 15e6cf8..edabfcd 100644
--- a/pymake/values.py
+++ b/pymake/values.py
@@ -1,4 +1,4 @@
-cmake_export_compile_cmmands = "CMAKE_EXPORT_COMPILE_COMMANDS"
+cmake_export_compile_commands = "CMAKE_EXPORT_COMPILE_COMMANDS"
 project_name="PROJECT_NAME"
 public = "PUBLIC"
 static = "STATIC"
@@ -13,4 +13,5 @@ o3 = "-O3"
 o2 = "-O2"
 cmake_cxx_flags_release = "CMAKE_CXX_FLAGS_RELEASE"
 cmake_cxx_flags_debug = "CMAKE_CXX_FLAGS_DEBUG"
-on="ON"
\ No newline at end of file
+on="ON"
+project_source_dir = "PROJECT_SOURCE_DIR"
\ No newline at end of file